The non-toxic period thong made for women who read labels.
Leakproof TENCEL™ Thong
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PFAS-free
300+ wears
CPSIA Certified
First Pair Promise
Made in LA
Machine washable
The thong you reach for every day, just with built-in protection you'll actually forget is there. No bulk. No tradeoffs. No tampons. Just soft, breathable TENCEL™ Modal against your skin, and a 3-layer gusset doing quiet, powerful work so you don't have to think about it.
Light to moderate days? Handled. White pants? Go for it.
Made from natural TENCEL™ Modal and toxin-free materials, this thong is soft, breathable, and designed so the protection disappears into the fabric, not into your day. Each pair is washable and reusable for 300+ wears, saving you money, reducing waste, and eliminating those constant monthly restocks.
Because what touches your body matters. Proudly made in Los Angeles.
3-Layer Leakproof Gusset Technology
1. Quick-Dry Top Layer (Against the Skin)
Soft, breathable, and engineered for high-performance wicking. Pulls moisture away instantly for a cool, dry feel all day.
2. Absorbent Core Layer (The Powerhouse)
Our antimicrobial absorbent layer soaks moisture up to 20× faster than cotton, bamboo, or hemp. Powered by SILVADUR™ technology, it reduces odor-causing bacteria by 99%+ without irritating or harming your skin, and becomes more absorbent over time.
3. Waterproof Bottom Layer (The Barrier)
Flexible, breathable, and completely toxin-free. This eco-engineered layer uses a solvent-free bonding process that emits no VOCs or harmful chemicals, while keeping leaks fully contained.
Fit & Fabric
Fits true to usual underwear size.
Measurements
- XS - 24" Waist
- S - 25.5" Waist
- M - 28" Waist
- L - 29" Waist
- XL - 31" Waist
* If you are in between sizes we recommend sizing up
Learn more about the benefits of TENCEL™ in our Fabric Guide.
Washing Care
- Cool machine delicate or hand wash
- Tumble dry low or line dry in shade
- Do not bleach
Our fabrics are tested to withstand 300+ washes without losing performance. The care tips above help preserve the feel and stretch for longer, but they’ll still look and feel amazing even with your normal laundry routine.
Shipping & The First Pair Promise
- Fast delivery with easy order tracking
- First pair not right? Free size exchange or full store credit within 30 days. Learn more.
Not all underwear is created equal.
|
The Industry Standard |
|---|---|
| Certified Body-Safe Materials | Harsh, Toxic Materials |
| Tailored for Comfort, Not Leaks | Leaky, Sweaty, Odor-Causing |
| Made with TENCEL™ Modal | Cheap, Synthetic Fibers |
| Designed for Vaginal Health | Ignores What Your Body Needs |
Frequently Asked Questions
How much flow can the Leakproof TENCEL™ Thong handle?
The 3-layer gusset handles light to moderate flow. Its ZORB® core absorbs 20× faster than cotton, bamboo, or hemp, so you stay cool, dry, and protected.
Can I wear it instead of a tampon or liner?
Yes — protection is built right in. No tampons and no liners needed.
Is it non-toxic?
Yes. It's PFAS-free with no forever chemicals, and the waterproof ProSoft® ECO-PUL™ base is completely toxin-free and bonded without solvents (zero VOCs).
What size should I get?
It fits true to your usual underwear size (XS ≈ 24" waist up to XL ≈ 31" waist). If you're between sizes, we recommend sizing up.
How do I wash and care for them?
Cool machine (delicate) or hand wash, then tumble dry low or line dry in shade. Do not bleach. They're tested to withstand 300+ washes.
What if the fit isn't right?
You're covered by our First Pair Promise: a free size exchange or full store credit within 30 days.